Question 39Gas Turbine - Assistant Engineer70% to pass
In a centrifugal compressor, which component reduces the velocity and increases the static pressure of the air?
AI Explanation
The correct answer is B) Diffuser.
In a centrifugal compressor, the diffuser is the component that reduces the velocity and increases the static pressure of the air. As the air leaves the impeller, it has a high velocity but relatively low static pressure. The diffuser, which is a gradually expanding passage, slows down the airflow, causing a conversion of kinetic energy into static pressure. This increase in static pressure is a crucial function of the diffuser in the overall compression process.
The other options are incorrect because: A) the impeller is responsible for imparting the initial kinetic energy to the air; C) the eductor is a different component used for creating a vacuum; and D) the volute is the spiral-shaped casing that collects the compressed air from the diffuser.
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